Zosimus, New History 6.04

Zosimus (Greek Ζώσιμος): Early Byzantine, pagan author of a history of the Roman Empire, published in the first quarter of the sixth century CE.

The translation of ZosimusNew History offered here was printed in 1814 by W. Green and T. Chaplin in London, and was probably prepared by J. Davis of the Military Chronicle and Military Classics Office. The translator is anonymous. The text was found at Tertullian.org. The notes were added by Jona Lendering.

[6.4.1] Having thus arranged affairs throughout all Gaul, he decorated his eldest son, Constans, with the habit of a caesar, and sent him into Spain. For he wished to obtain the absolute sovereignty of that country, not only through the desire of enlarging his own dominions, but of diminishing the power of the relations of Honorius.

[6.4.2] He was apprehensive, lest when they had collected together an army of the soldiers who were in that quarter, they might on some occasion cross the Pyrenaean Mountains and attack him, while Honorius might send an army from Italy, and by surrounding him on every side, depose him from his throne. Constans therefore went into Spain, having with him Terentius as his general, and Apollinarius as prefect of his court, <and as ... of the court>. 

[6.4.3] Having appointed all the officers, both civil and military, he sent his army under their conduct against the relations of the emperor Honorius, who had thrown all Spain into a state of disturbance. These having commenced the first assault against Constans with their Lusitanian soldiers, and finding themselves overpowered, collected an immense number of slaves and peasants, by whose assistance they had nearly reduced him to the most precarious danger. 

[6.4.4] But even in this emergency their expectations were frustrated, but they with their wives fell into the hands of Constans. This disaster being made known to their brothers, Theodosius and Lagodius, one of them fled into Italy, and the other safely escaped to to the east.